” I think it is safe to assume most store owners are as MGD put it really nice guy or just a good salesman,”
Maybe some heimish stores. Large corporations not. If you can ask, then good.
If I’m wrong with my assumptions, nothing happens, If you are wrong with yours, you committed gezel.
“I dont see why I have to follow your gezeirahs.”
I’m giving advice. Follow it or ignore it at your own risk.